66558835484 has 12 divisors (see below), whose sum is σ = 116755955400. Its totient is φ = 33199991088.

The previous prime is 66558835481. The next prime is 66558835507. The reversal of 66558835484 is 48453885566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66558835481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19854779 + ... + 19858130.

It is an arithmetic number, because the mean of its divisors is an integer number (9729662950).

Almost surely, 2^66558835484 is an apocalyptic number.

It is an amenable number.

66558835484 is a deficient number, since it is larger than the sum of its proper divisors (50197119916).

66558835484 is a wasteful number, since it uses less digits than its factorization.

66558835484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39713332 (or 39713330 counting only the distinct ones).

The product of its digits is 110592000, while the sum is 62.

The spelling of 66558835484 in words is "sixty-six billion, five hundred fifty-eight million, eight hundred thirty-five thousand, four hundred eighty-four".